MIAMI — Citing a lack of evidence, a federal judge on Thursday dismissed terrorism support and conspiracy charges against the younger of two Muslim clerics accused of funneling thousands of dollars to the Pakistani Taliban.

US District Judge Robert Scola ruled that ‘‘no rational trier of fact’’ could convict Izhar Khan, 26, who is imam at a mosque in suburban Margate north of Fort Lauderdale. The trial is continuing against his father, 77-year-old Hafiz Khan. Scola said the evidence against the older Khan is much stronger.